Compact arbitrary terminated power divider with bandwidth‐enhanced negative group delay characteristics

Abstract

SummaryA novel compact arbitrary terminated power divider with bandwidth‐enhanced negative group delay (NGD) characteristics is proposed. The NGD characteristics are controlled by characteristic impedances of transmission lines and the coupled line between two output ports. Flat and wide NGD bandwidth is produced by using the combination of a series resistor and short‐circuited coupled‐line section. The complete closed‐form equations are presented. For experimental demonstration, a prototype is designed and fabricated at f0 of 2.14 GHz. The measured results indicate that the proposed power divider is able to realize wide NGD bandwidth and good NGD flatness.